Although the Belfast dialect can not be considered Scots it does include a number of features of Ulster Scots origin. Belfast lies between Ulster Scots speaking areas to the north and south. Consequently the speech of Belfast contains numerous vocabulary, grammar and syntactical features of Scots origin brought to the city by 19th and 20th century incomers from Down and Antrim.
Vocabulary items include such words as
thon, scallion, weans, mebbe
(maybe), jouk, keek, skelf, polis,
crack, farl (fardel), oxter, neb,
scunner, stour, redd and clart.
Ay and ye for 'yes' and 'you' are almost universal.
Grammatical and syntactical features include:
The use of for til and for to (and the use of on after waiting):
Typically Scots use of the auxiliaries will, would, should, could, might and can avoiding, 'shall', 'ought' and 'may'.
Scots use of is and was and the verb inflexion -s:
Most of the Scots grammatical features and idioms carried over into SSE also occur in Mid Ulster English.
Some Belfast phonology also shows Scots influence - even preserving the system of vowel length more clearly than some Ulster Scots dialects themselves.
The retention of the pronunciation /ʍ/ for <wh> may well be due to Scots influence.
The pronunciations /ɑ/ in words like bad, hand, man, Maud and fraud etc. /æ/ in words like bit, pick and fish etc. and the diphthong /əi/ or /aɪ/ in words like bide, Friday, rise, wife and white etc.
Henry, Alison (1995) Belfast English
and Standard English - Dialect Variation and Parameter
Setting, University of Ulster.
Harris, J. (1985) Phonological Variation and Change Studies in Hiberno-English, Cambridge University Press.
Milroy, James (1981) Regional Accents of English: Belfast, Belfast: Blackstaff.